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You searched for: Subject term dose response Remove constraint Subject term: dose response Subject term Brassica napus Remove constraint Subject term: Brassica napus
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1. Identification of chemical imposition stimulants for the diamondback moth, Plutella xylostella, present in three species of Brassicaceae

Author:
Reed, D.W.; Pivnick, K.A.; Underhill, E.W.
Source:
Entomologia experimentalis et applicata 1989 v.53 no.3 pp. 277-286
ISSN:
0013-8703
Subject:
Brassica juncea; Brassica napus; Plutella xylostella; Sinapis alba; bioassays; crops; dose response; glucosinolates; ion exchange; liquid chromatography; moths; oviposition; oviposition deterrents; reference standards; thioglucosidase
Abstract:
... Plant chemicals in three cruciferous crop species, Brassica napus L., B. juncea (L.) Czerniak, and Sinapis alba L., that stimulate oviposition in the diamondback moth, Plutella xylostella (L.) (Lepidoptera: Plutellidae) were investigated in laboratory bioassays. Aerial portions of 4- to 6-week-old plants were extracted and fractionated using ion-exchange liquid chromatography. The oviposition stim ...
DOI:
10.1111/j.1570-7458.1989.tb03575.x

2. Zinc requirement for stomatal opening in cauliflower

Author:
Sharma, P.N.; Tripathi, A.; Bisht, S.S.
Source:
Plant physiology 1995 v.107 no.3 pp. 751-756
ISSN:
0032-0889
Subject:
Brassica napus; Brassica oleracea var. botrytis; stomatal movement; zinc; dose response; nutrient deficiencies; leaves; waxes; biosynthesis; proline; carbonate dehydratase; enzyme activity; leaf water potential; guard cells; potassium; chemical constituents of plants; thickness
Abstract:
... Zn deficiency induced increases in epicuticular wax deposits, lamina thickness, degree of succulence, water saturation deficit, diffusive resistance, and proline accumulation and decreases in carbonic anhydrase activity, water potential, stomatal aperture, and transpiration in the leaves of cauliflower (Brassica oleracea L. var botrytis cv Pusa) plants. Restoration of Zn supply to the deficient pl ...

3. Biological activity of optically pure C-1 altered abscisic acid analogs in Brassica napus microspore embryos

Author:
Hays, D.B.; Rose, P.; Abrams, S.R.; Moloney, M.M.
Source:
Journal of plant growth regulation 1996 v.15 no.1 pp. 5-11
ISSN:
0721-7595
Subject:
messenger RNA; germination; dose response; embryo (plant); aldehydes; isomers; gene expression; genes; esters; Brassica napus; mutants; abscisic acid; molecular conformation; alcohols
Abstract:
... We have examined the effects of stereochemically pure analogs of abscisic acid (ABA) on three responses in Brassica napus microspore embryos. The analogs used include modifications to natural (S-) (+)-ABA (=N-ABA) at the C-1 and C-1' positions. At the C-1 position, the carboxylic acid function was replaced with an alcohol, aldehyde, or methyl ester functional group, and at the chiral C-1' position ...
DOI:
10.1007/BF00213128

4. Correlation of fungicidal activity of Brassica species with allyl isothiocyanate production in macerated leaf tissue

Author:
Mayton, H.S.; Olivier, C.; Vaughn, S.F.; Loria, R.
Source:
Phytopathology 1996 v.86 no.3 pp. 267-271
ISSN:
0031-949X
Subject:
soil fungi; volatile compounds; cultivars; dose response; plant diseases and disorders; cultural control; Brassica nigra; chemical constituents of plants; Brassica rapa subsp. oleifera; plant extracts; green manures; Brassica juncea; Brassica carinata; disease control; plant pathogenic fungi; Brassica napus; genetic variation; Fusarium sambucinum; soil fumigation; Sinapis alba subsp. alba
Abstract:
... Brassica species were tested for production of volatile fungicidal compounds from macerated green leaf tissue. Tissue (10, 20, and 40 g) of one cultivar each of six Brassica species was assayed for inhibition of Fusarium sambucinum. Only cultivars of B. nigra and B. juncea suppressed radial growth (>50% inhibition of control). Plant introduction accessions (PIs) of B. juncea, B. carinata, B. nigra ...
Handle:
10113/25110

5. Effect of sublethal dosages of 2,4-D on annual broadleaf crops

Author:
Wall, D.A.
Source:
Canadian journal of plant science 1996 v.76 no.1 pp. 179-185
ISSN:
0008-4220
Subject:
Helianthus annuus; dose response; seeds; phytotoxicity; developmental stages; leaf area index; seed oils; Fagopyrum esculentum; crop yield; 2,4-D; growth retardation; Brassica napus; chemical constituents of plants; Pisum sativum; Lens culinaris; application rate; Manitoba
DOI:
10.4141/cjps96-036

6. Production of peroxidases by hairy roots of Brassica napus

Author:
Agostini, E.; Forchetti, S.M. de.; Tigier, H.A.
Source:
Plant cell, tissue, and organ culture 1996 v.47 no.2 pp. 177-182
ISSN:
0167-6857
Subject:
genetic transformation; protein synthesis; dose response; protein content; transgenic plants; calcium; explants; Rhizobium rhizogenes; peroxidases; Brassica napus; enzyme activity; isozymes; roots; leaves
Abstract:
... Hairy roots cultures derived from leaf explants of Brassica napus L. produced and secreted peroxidases. The enzyme activity in the medium increased with growth but it remained nearly constant in the tissue. The changes in extracellular peroxidase activity seemed to be correlated with the increase in a basic peroxidase of pI: 9.6. Four isoenzymes with pI in the range 8.5-9.6 and a neutral peroxidas ...
DOI:
10.1007/BF02318955

7. The effects of proline, thioproline and methylglyoxal-bis-(guanylhydrazone) on shoot regeneration frequencies from stem explants of B. napus

Author:
O'Neill, C.M.; Arthur, A.E.; Mathias, R.J.
Source:
Plant cell reports 1996 v.15 no.9 pp. 695-698
ISSN:
0721-7714
Subject:
polyamines; dose response; internodes; proline; varieties; explants; genotype; Brassica napus; genetic variation; shoots
Abstract:
... Internode segments from aseptic shoot cultures are the most prolific explants for the regeneration of Brassica shoots in vitro. These explants also have the advantage of not being subject to the genotypic variations in regeneration response observed in hypocotyl and cotyledon explants. Despite reports of 80-100% shoot regeneration from stem explants, observed frequencies are typically 50-60%. Thre ...
DOI:
10.1007/BF00231927
PubMed:
24178613

8. Effects of waterlogging on nitrogen accumulation and alleviation of waterlogging damage by application of nitrogen fertilizer and mixtalol in winter rape (Brassica napus L.)

Author:
Zhou, W.; Zhao, D.; Lin, X.
Source:
Journal of plant growth regulation 1997 v.16 no.1 pp. 47-53
ISSN:
0721-7595
Subject:
nitrogen content; dose response; stems; catalase; nitrogen; developmental stages; superoxide dismutase; chemical constituents of plants; stress response; flowers; Brassica napus; flooded conditions; enzyme activity; chlorophyll; roots; alcohols; leaves; nitrogen fertilizers
Abstract:
... A study on the physiological and yield effects of waterlogging and the alleviation of waterlogging damage by the application of nitrogen fertilizers and mixtalol in winter rape was conducted in experimental tanks especially designed for controlling soil moisture content. The results showed that waterlogging at the seedling and stem elongation stages causes a significant decrease in nitrogen conten ...
DOI:
10.1007/PL00006974

9. Importance of the chiral centers of jasmonic acid in the responses of plants. Activities and antagonism between natural and synthetic analogs

Author:
Holbrook, L.; Tung, P.; Ward, K.; Reid, D.M.; Abrams, S.; Lamb, N.; Quail, J.W.; Moloney, M.M.
Source:
Plant physiology 1997 v.114 no.2 pp. 419-428
ISSN:
0032-0889
Subject:
Helianthus annuus; Brassica napus; measurement; chemical degradation; dose response; jasmonic acid; gene expression; Triticum aestivum; Nicotiana tabacum; esters; stereochemistry; enzyme activity; chemical structure; seed germination; transgenic plants; cotyledons; proteinase inhibitors; reporter genes; chemical constituents of plants; chlorophyll; beta-glucuronidase
Abstract:
... The importance of the two chiral centers at C-3 and C-7 in the molecular structure of jasmonic acid in plant responses was investigated. We separated methyl jasmonate (MeJA) into (3R)- and (3S)-isomers with a fixed stereochemistry at C-3, but epimerization at C-7 is possible. The four isomers of the nonepimerizable analog 7-methyl MeJA were synthesized. These six esters and their corresponding aci ...

10. Toxicity of glucosinolate degradation products from Brassica napus seed meal toward Aphanomyces euteiches f.sp. pisi

Author:
Smolinska, U.; Morra, M.J.; Knudson, G.R.; Brown, P.D.
Source:
Phytopathology 1997 v.87 no.1 pp. 77-82
ISSN:
0031-949X
Subject:
Aphanomyces euteiches; plant extracts; plant pathogenic fungi; Brassica napus; thioglucosidase; Pisum sativum; plant diseases and disorders; dose response; mycelium; antifungal properties; glucosinolates; cultivars; seeds; disease control; growth retardation; hydrolysis; solubility; biochemical pathways; oospores; genetic variation
Abstract:
... Brassica tissues are potentially useful in the control of Aphanomyces root rot of peas (Pisum sativum), but identity of the responsible compounds and specific impacts of those compounds on the pathogen's infection potential remain uncertain. Brassica napus seed meals and water extracts from these meals were used to determine the effect of glucosinolate hydrolysis products on Aphanomyces euteiches ...
DOI:
10.1094/PHYTO.1997.87.1.77
PubMed:
18945157

11. Accumulation of shikimic acid: a technique for screening glyphosate efficacy

Author:
Harring, T.; Streibig, J.C.; Husted, S.
Source:
Journal of agricultural and food chemistry 1998 v.46 no.10 pp. 4406-4412
ISSN:
0021-8561
Subject:
glyphosate; dose response; screening; shikimic acid; phenylalanine ammonia-lyase; enzyme activity; leaves; Brassica napus
Abstract:
... Biochemical changes in leaves of 3-week-old oil seed rape (Brassica napus L. cv. Iris) plants were determined shortly after treatment with different doses of glyphosate. Secondary effects of N-(phosphonomethyl)glycine (glyphosate) on activity of the enzyme phenylalamine ammonia-lyase was not related to dose of glyphosate by any known model within the first 48 h after spraying. Accumulation of shik ...
DOI:
10.1021/jf9802124

12. Induction of microspore-derived embryos of Brassica napus L. with polyethylene glycol (PEG) as osmoticum in a low sucrose medium

Author:
Ilic-Grubor, K.; Attree, S.M.; Fowke, L.C.
Source:
Plant cell reports 1998 v.17 no.5 pp. 329-333
ISSN:
0721-7714
Subject:
anther culture; dose response; water potential; sucrose; embryo (plant); osmotic pressure; polyethylene glycol; embryo culture; mannitol; Brassica napus; embryogenesis; pollen; culture media
Abstract:
... Isolated microspores of Brassica napus were cultured on high concentrations of mannitol or polyethylene glycol (PEG 4000), with only a very limited amount of sucrose (0.08-0.1%) provided as carbohydrate source in the medium. While microspores cultured on high mannitol yielded no embryos and no embryogenic cell divisions were observed, microspores on high PEG developed into embryos within 2 weeks, ...
DOI:
10.1007/s002990050402

13. Direct somatic embryogenesis, plant regeneration and in vitro flowering in rapid-cycling Brassica napus

Author:
Koh, W.L.; Loh, C.S.
Source:
Plant cell reports 2000 v.19 no.12 pp. 1177-1183
ISSN:
0721-7714
Subject:
kinetin; flowering; dose response; embryo (plant); zeatin; explants; somatic embryogenesis; plant morphology; benzyladenine; isopentenyladenine; Brassica napus; micropropagation; abscisic acid; pollination; culture media
Abstract:
... A simple method to induce somatic embryogenesis from seeds of rapid-cycling Brassica napus is described. Seedlings cultured on Murashige and Skoog (MS) basal medium produced somatic embryos directly on hypocotyls and cotyledons after 2 to 3 subcultures onto the same medium. A low pH of the medium (3.5-5) was more conducive to somatic embryogenesis than a higher pH (6 and 7). Embryogenic potential ...
DOI:
10.1007/s002990000268

14. Vital staining of plant cell suspension cultures: evaluation of the phytotoxic activity of the phytotoxins phomalide and destruxin B

Author:
Pedras, M.S.C.; Biesenthal, C.J.
Source:
Plant cell reports 2000 v.19 no.11 pp. 1135-1138
ISSN:
0721-7714
Subject:
phytotoxins; dose response; Plenodomus lingam; phytotoxicity; Sinapis alba; differential staining; Alternaria brassicae; Brassica juncea; chemical structure; plant pathogenic fungi; Brassica napus; cell suspension culture
Abstract:
... A cell suspension culture assay to determine the phytotoxicity of the fungal toxins phomalide, a host-selective toxin produced by the fungus Phoma lingam (Tode ex Fr.) Desm., perfect stage Leptosphaeria maculans (Desm.) Ces. et de Not., and destruxin B, the major host-selective toxin produced by the fungus Alternaria brassicae (Berk.) Sacc., was carried out with three Brassica spp. It was establis ...
DOI:
10.1007/s002990000244

15. Improved microspore culture and doubled-haploid plant regeneration in the brown condiment mustard (Brassica juncea)

Author:
E. Lionneton; W. Beuret; C. Delaitre; S. Ochatt; M. Rancillac
Source:
Plant cell reports 2001 v.20 no.2 pp. 126-130
ISSN:
0721-7714
Subject:
anther culture; dose response; diploidy; haploidy; Brassica nigra; sucrose; Sinapis alba; gibberellic acid; Brassica juncea; pollen; genotype; Brassica napus; micropropagation; genetic variation; embryogenesis; Brassica rapa subsp. oleifera; culture media
Abstract:
... The availability of doubled haploids could greatly contribute to improving seed quality in condiment mustard (Brassica juncea). We have developed an efficient and reliable protocol of microspore culture, modified from that of Baillie et al. (1992), based on a modification of the sucrose concentration of culture media. A comparison of microspore culture media differing in their sucrose content show ...
DOI:
10.1007/s002990000292

16. Plant density and nutrient availability constrain constitutive and wound-induced expression of trypsin inhibitors in Brassica napus

Author:
Cipollini, D.F.; Bergelson, J.
Source:
Journal of chemical ecology 2001 v.27 no.3 pp. 593-610
ISSN:
0098-0331
Subject:
Brassica napus; NPK fertilizers; dose response; greenhouse experimentation; leaves; nutrient availability; nutrient density; plant density; protein content; seedlings; trypsin inhibitors
Abstract:
... We investigated the effects of plant density on plant size, leaf total soluble protein content, and constitutive and wound-induced levels of proteinaceous trypsin inhibitors in pot-grown Brassica napus seedlings in two greenhouse studies. We manipulated plant density by varying the number of intraspecific neighbors surrounding a target plant in the center of each pot. In general, constitutive and ...
PubMed:
11441448

17. Efficient production of doubled haploid plants by immediate colchicine treatment of isolated microspores in winter Brassica napus

Author:
Zhou, W.J.; Tang, G.X.; Hagberg, P.
Source:
Plant growth regulation 2002 v.37 no.2 pp. 185-192
ISSN:
0167-6903
Subject:
Brassica napus; anther culture; embryo (plant); embryogenesis; plant breeding; hybrids; chromosome addition; colchicine; dose response; germination; genetic variation; haploidy; genotype
Abstract:
... The effect of colchicine on embryogenesis induction and chromosome doubling during microspore culture was evaluated in two F1 hybrids of winter oilseed rape (Brassica napus L.). Colchicine treatment (50 and 500 mg/L) of isolated microspores during the first 15 h in culture stimulated embryogenesis and produced large amounts of healthy-looking embryos. These normal embryos germinated well at 24 deg ...

18. High frequency shoot regeneration and Agrobacterium-mediated DNA transfer in canola (Brassica napus)

Author:
Khan, M.R.; Rashid, H.; Ansar, M.; Chaudry, Z.
Source:
Plant cell, tissue, and organ culture 2003 v.75 no.3 pp. 223-231
ISSN:
0167-6857
Subject:
oil crops; benzyladenine; genes; Brassica napus; 2,4-D; shoots; dose response; hypocotyls; Agrobacterium radiobacter; gibberellic acid; explants; varieties; naphthaleneacetic acid; in vitro regeneration; enzyme activity; culture media; genetic transformation; gene transfer; transgenic plants; silver nitrate; beta-glucuronidase
Abstract:
... Five different varieties of Brassica napus (Cyclone, Dunkled, Oscar, Rainbow and KS75) were tested for their regeneration response. Cyclone showed a very high frequency of regeneration (92%). The use of silver nitrate was a pre-requisite for efficient shoot regeneration. Hypocotyls were selected as the starting material for transformation experiments on the basis of high transient GUS expression. ...

19. High Frequency Conversion of Microspore-Derived Embryos of Brassica napus cv. Topas by Supplemental Calcium and Vitamins

Author:
Hui Tian; Cheng Yi Yao; Meng Xiang Sun
Source:
Plant cell, tissue, and organ culture 2004 v.76 no.2 pp. 159-165
ISSN:
0167-6857
Subject:
calcium chloride; dose response; embryo (plant); gibberellic acid; explants; microspores; vitamins; nutrient requirements; Brassica napus; micropropagation; abscisic acid; in vitro regeneration; culture media; ammonium nitrate; rapeseed
Abstract:
... Efficient and simple protocols were developed for conversion of embryos derived from microspores in rape. The frequency of embryo conversion was higher than 80% on improved media without pretreatments using ABA, GA₃ or desiccation, which had been required before embryos were transferred to solid media for conversion. While on basal media such as 1/2MS, the conversion frequency was no more than 32% ...
DOI:
10.1023/B:TICU.0000007292.10767.54

20. Calculating N fertilizer doses for oil-seed rape using plant and soil data

Author:
Makowski, D.; Maltas, A.; Morison, M.; Reau, R.
Source:
Agronomy for sustainable development 2005 v.25 no.1 pp. 159-161
ISSN:
1774-0746
Subject:
Brassica napus; oilseed crops; nitrogen fertilizers; fertilizer rates; prediction; dose response; decision support systems; nitrogen; soil nutrient balance; crop yield; seed oils; lipid content; mathematical models

21. A rapid response of beta-amylase to nitric oxide but not gibberellin in wheat seeds during the early stage of germination

Author:
Zhang, H.; Shen, W.B.; Xu, L.L.
Source:
Planta 2005 v.220 no.5 pp. 708-716
ISSN:
0032-0935
Subject:
rice; Oryza sativa; wheat; signal transduction; Brassica napus; plant proteins; barley; dose response; Hordeum vulgare; gibberellic acid; Brassica juncea; Triticum aestivum; beta-amylase; Arabidopsis thaliana; Zea mays; Glycine max; seeds; Citrullus lanatus var. lanatus; corn; enzyme activity; seed germination; nitric oxide; soybeans; alpha-amylase
DOI:
10.1007/s00425-004-1390-7
PubMed:
15517355

22. The Effect of Laser Treatment as a Weed Control Method

Author:
Mathiassen, S.K.; Bak, T.; Christensen, S.; Kudsk, P.
Source:
Biosystems engineering 2006 v.95 no.4 pp. 497-505
ISSN:
1537-5110
Subject:
apical meristems; weed biology; plant growth; weed control; dose response; lasers; developmental stages; Tripleurospermum perforatum; weeds; Brassica napus; Stellaria media; technology
Abstract:
... A laser beam directed towards weeds can be an efficient weed control method as an alternative to herbicides. Lasers may deliver high-density energy to selected plant material, raising the temperature of the water in the plant cells and thereby stop or delay the growth. A commercial use of lasers for weed control, however, require a systematic investigation of the relationship between energy densit ...
DOI:
10.1016/j.biosystemseng.2006.08.010

23. Modelling interactions between herbicide and nitrogen fertiliser in terms of weed response

Author:
KIM, D.S.; MARSHALL, E.J.P.; CASELEY, J.C.; BRAIN, P.
Source:
Weed research 2006 v.46 no.6 pp. 480-491
ISSN:
0043-1737
Subject:
weed control; simulation models; dose response; application rate; Galium aparine; herbicides; dry matter accumulation; Tripleurospermum perforatum; weeds; Brassica napus; crop-weed competition; Papaver rhoeas; decision making; nitrogen fertilizers
Abstract:
... The effects of nitrogen fertiliser on herbicide dose-response of weeds were investigated by measuring weed biomass after growth at a range of nitrogen levels and treatment with a range of herbicide doses. Increasing weed biomass at no-herbicide treatment (W₀) and the response rate of the dose-response curve (B), with increasing nitrogen were successfully described by the linear model and the expon ...
DOI:
10.1111/j.1365-3180.2006.00531.x

24. Observations on the potential of microwaves for weed control

Author:
Sartorato, I.; Zanin, G.; Baldoin, C.; De Zanche, C.
Source:
Weed research 2006 v.46 no.1 pp. 1-9
ISSN:
0043-1737
Subject:
sublethal effects; dose response; Panicum miliaceum; millets; Medicago sativa; alfalfa; oilseeds; prototypes; weeds; postemergent weed control; field experimentation; microwave treatment; Brassica napus; Abutilon theophrasti; plant damage; adverse effects; Italy
DOI:
10.1111/j.1365-3180.2006.00484.x

25. Identification of a Widespread Monomolecular Odor Differentially Attractive to Several Delia Radicum Ground-dwelling Predators in the Field

Author:
Antonin Ferry; Sebastien Dugravot; Thomas Delattre; Jean-Philippe Christides; Jacques Auger; Anne-Geneviève Bagnères; Denis Poinsot; Anne-Marie Cortesero
Source:
Journal of chemical ecology 2007 v.33 no.11 pp. 2064-2077
ISSN:
0098-0331
Subject:
chemical concentration; Carabidae; interspecific variation; Delia radicum; dose response; predatory insects; tritrophic interactions; Staphylinidae; volatile organic compounds; Brassica napus; sulfides; natural enemies; odors; foraging; roots; France
Abstract:
... Dimethyl disulfide (DMDS) was identified as a major volatile constituent of Brassica napus roots heavily infested by Delia radicum, the cabbage root fly. Attractiveness of this widespread compound was tested in the field in a naturally complex odorous environment. By using an original setup especially designed for ground dwelling beetles, different concentrations of the pure molecule as well as at ...
DOI:
10.1007/s10886-007-9373-3
PubMed:
17940823

26. Laboratory studies of the toxicity of spinosad and deltamethrin to Phyllotreta cruciferae (Coleoptera: Chrysomelidae)

Author:
Elliott, R.H.; Benjamin, M.C.; Gillott, C.
Source:
Canadian entomologist 2007 v.139 no.4 pp. 534-544
ISSN:
0008-347X
Subject:
Phyllotreta cruciferae; spinosad; deltamethrin; topical application; oral administration; toxicity; mortality; dose response; antifeeding activity; Brassica napus; canola; temperature; surfactants; pesticide synergists

27. Detection of Sclerotinia sclerotiorum Using a Monomeric and Dimeric Single-Chain Fragment Variable (scFv) Antibody

Author:
Yajima, William; Rahman, Muhammad H.; Das, Dipankar; Suresh, Mavanur R.; Kav, Nat N.V.
Source:
Journal of agricultural and food chemistry 2008 v.56 no.20 pp. 9455-9463
ISSN:
0021-8561
Subject:
Sclerotinia sclerotiorum; diagnostic techniques; dose response; immunoassays; Botrytis cinerea; antibodies; flowers; rapid methods; plant pathogenic fungi; Brassica napus var. napus
Abstract:
... Sclerotinia sclerotiorum (Lib.) de Bary is a phytopathogenic fungus capable of causing significant yield losses in numerous crops, including canola, in which the fungus causes sclerotinia stem rot. Immunological detection methods to rapidly determine the presence of S. sclerotiorum on plants may provide growers with a viable diagnostic tool to aid with fungicide use decisions. This paper discusses ...
DOI:
10.1021/jf801768g
PubMed:
18800799

28. Development of Drought-Tolerant Canola (Brassica napus L.) through Genetic Modulation of ABA-mediated Stomatal Responses

Author:
Jiangxin Wan; Rebecca Griffiths; Jifeng Ying; Peter McCourt; Yafan Huang
Source:
Crop science 2009 v.49 no.5 pp. 1539-1554
ISSN:
0011-183X
Subject:
stomatal movement; guard cells; canola; stomatal conductance; dose response; protein subunits; drought tolerance; dosage; drought; water stress; biochemical pathways; genetic engineering; Brassica napus; abscisic acid
Abstract:
... Canola is one of the most important oilseed crops, and its seed yield and quality are significantly affected by environmental stresses such as drought. The phytohormone abscisic acid (ABA) is induced by drought and triggers stomatal closure to reduce transpiration, which accounts for >90% of water loss in plants. The ABA-mediated stomatal response is a dosage-dependent process that can be achieved ...
DOI:
10.2135/cropsci2008.09.0568

29. Impact of transgenic oilseed rape expressing oryzacystatin-1 (OC-1) and of insecticidal proteins on longevity and digestive enzymes of the solitary bee Osmia bicornis

Author:
Konrad, Roger; Connor, Melanie; Ferry, Natalie; Gatehouse, Angharad M.R.; Babendreier, Dirk
Source:
Journal of insect physiology 2009 v.55 no.4 pp. 305-313
ISSN:
0022-1910
Subject:
Osmia; solitary bees; Brassica napus; transgenic plants; cysteine proteinase inhibitors; Kunitz-type proteinase inhibitor; agglutinins; Bacillus thuringiensis; crystal proteins; insecticidal proteins; nontarget organisms; pollinating insects; longevity; digestive enzymes; dose response; risk assessment
Abstract:
... The risk that insect-resistant transgenic plants may pose for solitary bees was assessed by determining longevity of adult Osmia bicornis (O. rufa) chronically exposed to transgenic oilseed rape expressing oryzacystatin-1 (OC-1) or to the purified insecticidal proteins recombinant rOC-1, Kunitz soybean trypsin inhibitor (SBTI), Galanthus nivalis agglutinin (GNA), or Bacillus thuringiensis toxin Cr ...
DOI:
10.1016/j.jinsphys.2008.12.007
PubMed:
19135058

30. Cloning and Characterization of a G Protein β Subunit Gene Responsive to Plant Hormones and Abiotic Stresses in Brassica napus

Author:
Gao, Yong; Zhao, Yun; Li, Tingting; Ren, Caixia; Liu, Yang; Wang, Maolin
Source:
Plant molecular biology reporter 2010 v.28 no.3 pp. 450-459
ISSN:
0735-9640
Subject:
plant development; dose response; brassinosteroids; polymerase chain reaction; drought tolerance; gene expression; molecular cloning; Brassica napus; abscisic acid; salt stress; indole acetic acid; plant proteins
Abstract:
... A full-length cDNA encoding a putative G protein β subunit (Gβ), designated as BnGB1, was isolated from Brassica napus. BnGB1 was predicted to encode a precursor protein of 378-amino acid residues. The expression of BnGB1 in different B. napus tissues and developmental stages was analyzed using real-time polymerase chain reaction. The results showed that BnGB1 expressed was high at the seventh day ...
DOI:
10.1007/s11105-009-0169-1

31. Towards elucidating the differential regulation of floral and extrafloral nectar secretion

Author:
Venkatesan Radhika; Christian Kost; Wilhelm Boland; Martin Heil
Source:
Plant signaling & behavior 2010 v.5 no.7 pp. 924-926
ISSN:
1559-2324
Subject:
Brassica napus; flowers; plant secretions and exudates; signal transduction; jasmonic acid; gibberellic acid; volatile compounds; dose response
Abstract:
... Nectar is a rich source of sugars that serves the attraction of pollinators (floral nectar) or predatory arthropods (extrafloral nectar). We just begin to understand the similarities and differences that underlie the secretory control of these two important types of plant secretions. Jasmonates are phytohormones, which are well documented to be involved in plant developmental processes and plant d ...
DOI:
10.4161/psb.5.7.12134
PubMed:
20622524
PubMed Central:
PMC3115044

32. Ozone dose–response relationships for spring oilseed rape and broccoli

Author:
Maarten De Bock; Maarten Op de Beeck; Ludwig De Temmerman; Yves Guisez; Reinhart Ceulemans; Karine Vandermeiren
Source:
Atmospheric environment 2011 v.45 no.9 pp. 1759-1765
ISSN:
1352-2310
Subject:
Brassica napus; Brassica oleracea; air; atmospheric chemistry; broccoli; correlation; crops; developmental stages; dose response; growing season; leaf area; oils; ozone; phytotoxicity; pollutants; rapeseed; seed yield; troposphere; vegetative growth
Abstract:
... Tropospheric ozone is an important air pollutant with known detrimental effects for several crops. Ozone effects on seed yield, oil percentage, oil yield and 1000 seed weight were examined for spring oilseed rape (Brassica napus cv. Ability). For broccoli (Brassica oleracea L. cv. Italica cv. Monaco) the effects on fresh marketable weight and total dry weight were studied. Current ozone levels wer ...
DOI:
10.1016/j.atmosenv.2010.12.027

33. Feedback regulation of plastidic acetyl-CoA carboxylase by 18:1-acyl carrier protein in Brassica napus

Author:
Carl Andre; Richard P. Haslam; John Shanklin
Source:
Proceedings of the National Academy of Sciences of the United States of America 2012 v.109 no.25 pp. 10107-10112
ISSN:
0027-8424
Subject:
Brassica napus; acetyl-CoA carboxylase; biosynthesis; canola; carbon; cell culture; crops; cytosol; dose response; enzyme activity; esters; free fatty acids; oils; oilseed crops; oleic acid; radiolabeling; seeds
Abstract:
... Plant seed oil represents a major renewable source of reduced carbon, but little is known about the biochemical regulation of its synthesis. The goal of this research was to identify potential feedback regulation of fatty acid biosynthesis in Brassica napus embryo-derived cell cultures and to characterize both the feedback signals and enzymatic targets of the inhibition. Fatty acids delivered via ...
DOI:
10.1073/pnas.1204604109
PubMed:
22665812
PubMed Central:
PMC3382543

34. Baseline susceptibility and insecticide resistance monitoring in European populations of Meligethes aeneus and Ceutorhynchus assimilis collected in winter oilseed rape

Author:
Christoph T. Zimmer; Harald Köhler; Ralf Nauen
Source:
Entomologia experimentalis et applicata 2014 v.150 no.3 pp. 279-288
ISSN:
0013-8703
Subject:
Brassica napus; Brassicogethes aeneus; Ceutorhynchus assimilis; adults; dose response; insect larvae; insecticide resistance; lambda-cyhalothrin; monitoring; pesticide application; pests; pyrethrins; resistance management; thiacloprid; winter; Germany; Sweden; Ukraine
Abstract:
... Pollen beetle, Meligethes aeneus (Fabricius) (Coleoptera: Nitidulidae), and cabbage seed weevil, Ceutorhynchus assimilis (Paykull) (Coleoptera: Curculionidae), are important pests in the production of European winter oilseed rape, Brassica napus L. (Brassicaceae), which is grown on several million hectares in Europe. Insecticide treatments are common to control both pests once they exceed economic ...
DOI:
10.1111/eea.12162

35. Citric acid assisted phytoremediation of cadmium by Brassica napus L

Author:
Sana Ehsan; Shafaqat Ali; Shamaila Noureen; Khalid Mahmood; Mujahid Farid; Wajid Ishaque; Muhammad Bilal Shakoor; Muhammad Rizwan
Source:
Ecotoxicology and environmental safety 2014 v.106 pp. 164-172
ISSN:
0147-6513
Subject:
Brassica napus; aerial parts; antioxidant activity; bioavailability; biomass; cadmium; chelating agents; citric acid; cost effectiveness; dose response; electrolytes; enzyme activity; heavy metals; hydrogen peroxide; hydroponics; leaves; malondialdehyde; metalloids; oxidative stress; photosynthesis; phytoremediation; pigments; plant growth; polluted soils; protein content; roots; solubility; stems; toxicity; toxins
Abstract:
... Phytoextraction is an eco-friendly and cost-effective technique for removal of toxins, especially heavy metals and metalloids from contaminated soils by the roots of high biomass producing plant species with subsequent transport to aerial parts. Lower metal bioavailability often limits the phytoextraction. Organic chelators can help to improve this biological technique by increasing metal solubili ...
DOI:
10.1016/j.ecoenv.2014.03.007

36. Effect of Water Deficiency and Potassium Application on Plant Growth, Osmolytes and Grain Yield of Brassica Napus Cultivars

Author:
Murad Ali; Jehan Bakht; Gul Daraz Khan
Source:
Acta botanica Croatica 2014 v.73 no.2 pp. 299-314
ISSN:
0365-0588
Subject:
Brassica napus; canola; cole crops; cultivars; data analysis; dose response; field experimentation; grain yield; irrigation; plant growth; potassium; proline; sugar content; water content; water requirement
Abstract:
... One of the major issues with brassica oil seed production is the water requirement of the brassica crop. To address the problem, field experiments were conducted to evaluate the effect of potassium (K) and water deficiency levels on canola (Brassica napus L.). Analysis of the data revealed that application of K, irrigation and interactions between irrigation and cultivar (I x C), irrigation and po ...
DOI:
10.2478/botcro-2014-0016

37. Control of clethodim-resistant Lolium rigidum (rigid ryegrass) in triazine-tolerant canola (Brassica napus L.) in southern Australia

Author:
Rupinder Kaur Saini; Samuel G.L. Kleemann; Christopher Preston; Gurjeet S. Gill
Source:
Crop protection 2015 v.78 pp. 99-105
ISSN:
0261-2194
Subject:
Brassica napus; Lolium rigidum; at-risk population; atrazine; canola; clethodim; dose response; field experimentation; genes; mutation; plant density; propyzamide; seed yield; split application; weed control; South Australia
Abstract:
... Two field experiments were conducted during 2013 and 2014 at Roseworthy, South Australia, to identify effective herbicide options for the control of clethodim-resistant Lolium rigidum in triazine-tolerant canola. Dose response experiments in pots confirmed resistance in both field populations (F4-2013 and S2-2014) of L. rigidum to clethodim and butroxydim. At the recommended field rate of clethodi ...
DOI:
10.1016/j.cropro.2015.08.023

38. Molecular basis of ALS- and/or ACCase-inhibitor resistance in shortawn foxtail (Alopecurus aequalis Sobol.)

Author:
Wenwen Xia; Lang Pan; Jun Li; Qiong Wang; Yujuan Feng; Liyao Dong
Source:
Pesticide biochemistry and physiology 2015 v.122 pp. 76-80
ISSN:
0048-3575
Subject:
Alopecurus aequalis; Brassica napus; cross resistance; dose response; genes; imidazolinone herbicides; mutation; photosystem II; sulfonylureas; weeds; wheat
Abstract:
... Alopecurus aequalis, a predominant weed species in wheat and oilseed rape fields, can no longer be controlled by mesosulfuron-methyl application after continuous use over several years. Based on dose–response studies, the putative resistant populations, JTJY-1 and JHHZ-1, were found to be resistant to mesosulfuron-methyl, with resistance index values of 5.5 and 14, respectively. Sensitivity assays ...
DOI:
10.1016/j.pestbp.2014.12.019

39. Multiple resistance to ACCase and AHAS-inhibiting herbicides in shortawn foxtail (Alopecurus aequalis Sobol.) from China

Author:
Wenlei Guo; Guohui Yuan; Weitang Liu; Yaling Bi; Long Du; Chao Zhang; Qi Li; Jinxin Wang
Source:
Pesticide biochemistry and physiology 2015 v.124 pp. 66-72
ISSN:
0048-3575
Subject:
Alopecurus aequalis; Brassica napus; bioassays; chlorotoluron; clethodim; dose response; genes; grass weeds; greenhouses; homozygosity; isoproturon; mutation; quizalofop; seeds; sethoxydim; winter wheat; China
Abstract:
... Shortawn foxtail (Alopecurus aequalis) is a troublesome grass weed infesting winter wheat and oilseed rape productions in China. Fenoxaprop-p-ethyl and mesosulfuron-methyl failed to control shortawn foxtail of AHSX-1 population collected from a wheat field in Shou County, Anhui province. Molecular analyses revealed that Asp2078Gly mutation of ACCase and Trp574Leu mutation of AHAS were present in p ...
DOI:
10.1016/j.pestbp.2015.04.006

40. Mechanisms of Resistance to Pyroxsulam and ACCase Inhibitors in Japanese Foxtail (Alopecurus japonicus)

Author:
Feng Yujuan; Gao Yuan; Zhang Yong; Dong Liyao; Li Jun
Source:
Weed science 2016 v.64 no.4 pp. 695-704
ISSN:
0043-1745
Subject:
Alopecurus; Brassica napus; Brassica rapa subsp. oleifera; Triticum aestivum; acetolactate synthase; acetyl-CoA carboxylase; annuals; cross resistance; dose response; genes; grass weeds; imidazolinone herbicides; in vitro studies; malathion; photosystem II; piperonyl butoxide; resistance mechanisms; sequence analysis; sulfonylureas; tetraploidy; wheat; China
Abstract:
... Japanese foxtail is a predominant tetraploid grass weed in wheat and oilseed rape fields in eastern China. In China, pyroxsulam is mainly used to manage annual grass weeds, especially those resistant to acetyl coenzyme A carboxylase (ACCase)-inhibiting herbicides. Using dose–response studies, a pyroxsulam-resistant population, ACTC-1, was identified with a resistance index value of 58. Additionall ...
DOI:
10.1614/WS-D-16-00042.1

41. Phytotoxic Effect of Fiber Hemp Essential Oil on Germination of Some Weeds and Crops

Author:
Synowiec Agnieszka; Rys Magdalena; Bocianowski Jan; Wielgusz Katarzyna; Byczyñska Malgorzata; Heller Krzysztof; Kalemba Danuta
Source:
Journal of essential oil-bearing plants 2016 v.19 no.2 pp. 262-276
ISSN:
0976-5026
Subject:
Brassica napus; Bromus secalinus; Cannabis sativa; Echinochloa crus-galli; allelopathy; anti-infective properties; carbohydrate composition; corn; crops; dose response; essential oils; gas chromatography-mass spectrometry; germination; grasses; hemp; inflorescences; laboratory experimentation; oats; oils; phytotoxicity; seedling growth; seedlings; sesquiterpenoids; weeds
Abstract:
... Fiber hemp plants (Cannabis sativa L.) display competitive and allelopathic activity against weeds. Fiber hemp essential oil (EO) was previously assessed for its antimicrobial properties. In this work we aimed to assess the allelopathic efficacy of this EO. The essential oil derived from the inflorescences of fiber hemp cv. ‘Bialobrzeskie’ contained mainly mono- and sesquiterpene hydrocarbons, as ...
DOI:
10.1080/0972060X.2015.1137236

42. Role of exogenous salicylic acid in regulating physio-morphic and molecular changes under chromium toxicity in black- and yellow- seeded Brassica napus L.

Author:
Rafaqat A. Gill; Na Zhang; Basharat Ali; Muhammad A. Farooq; Jianxiang Xu; Muhammad B. Gill; Bizeng Mao; Weijun Zhou
Source:
Environmental science and pollution research international 2016 v.23 no.20 pp. 20483-20496
ISSN:
0944-1344
Subject:
Brassica napus; abiotic stress; antioxidant activity; chloroplasts; chromium; color; cultivars; dose response; gene expression; leaves; metabolism; mitochondria; oxygen; plant growth; plant organs; plant protection; proteins; reactive oxygen species; salicylic acid; starch granules; toxicity; transmission electron microscopy
Abstract:
... Salicylic acid (SA) mediates tolerance mechanisms in plants against a wide spectrum of biotic and abiotic stresses. Therefore, the present study was carried out to determine how SA regulates the plant protection mechanisms in two cultivars of oilseed rape (Brassica napus L.) under chromium (Cr) stress. Exogenously applied SA enhanced plant growth, increased dry biomasses, and strengthened the reac ...
DOI:
10.1007/s11356-016-7167-2

43. Different roles of glutathione in copper and zinc chelation in Brassica napus roots

Author:
Ilya E. Zlobin; Alexander V. Kartashov; George V. Shpakovski
Source:
Plant physiology and biochemistry 2017 v.118 pp. 333-341
ISSN:
0981-9428
Subject:
Brassica napus; canola; chelation; copper; dose response; enzyme activity; fluorescence; glutathione; ions; oxidation; permeability; plasma membrane; root hairs; staining; sulfhydryl groups; zinc
Abstract:
... We investigated the specific features of copper and zinc excess action on the roots of canola (Brassica napus L.) plants. Copper rapidly accumulated in canola root cells and reached saturation during several hours of treatment, whereas the root zinc content increased relatively slowly. Excessive copper and zinc entry inside the cell resulted in significant cell damage, as evidenced by alterations ...
DOI:
10.1016/j.plaphy.2017.06.029

44. Duration of Soil Activity of Foramsulfuron Plus Thiencarbazone-methyl Applied to Weed Species Typical of Sugar Beet Cultivation

Author:
Moritz J. Wendt; Christine Kenter; Erwin Ladewig; Martin Wegener; Bernward Märländer
Source:
Weed technology 2017 v.31 no.2 pp. 291-300
ISSN:
1550-2740
Subject:
Alopecurus myosuroides; Beta vulgaris; Brassica napus; Chenopodium album; Echinochloa crus-galli; Matricaria chamomilla; chamomile; dose response; field experimentation; herbicides; rapeseed; soil; sugar beet; weed control; Germany
Abstract:
... The duration of the soil activity of an acetolactate synthase-(ALS) inhibiting herbicide which is currently under approval for sugar beet cultivation was determined in a field trial series in Germany in 2013 and 2014. The herbicide containing foramsulfuron (FSN; 50 g L⁻¹) and thiencarbazone-methyl (TCM; 30 g L⁻¹) was applied in different dosages (25 + 15, 37.5 + 22.5 and 50 + 30 g FSN+TCM ha⁻¹) to ...

45. Extensive homoeologous genome exchanges in allopolyploid crops revealed by mRNAseq‐based visualization

Author:
Zhesi He; Lihong Wang; Andrea L. Harper; Lenka Havlickova; Akshay K. Pradhan; Isobel A. P. Parkin; Ian Bancroft
Source:
Plant biotechnology journal 2017 v.15 no.5 pp. 594-604
ISSN:
1467-7644
Subject:
Brassica napus; allopolyploidy; artificial selection; crops; cultivars; dose response; doubled haploids; evolution; genes; genetic variation; germplasm; plant breeding; rapeseed; seed quality; telomeres; wheat
Abstract:
... Polyploidy, the possession of multiple sets of chromosomes, has been a predominant factor in the evolution and success of the angiosperms. Although artificially formed allopolyploids show a high rate of genome rearrangement, the genomes of cultivars and germplasm used for crop breeding were assumed stable and genome structural variation under the artificial selection process of commercial breeding ...
DOI:
10.1111/pbi.12657
PubMed:
27808473
PubMed Central:
PMC5399007

46. Phytotoxic potential of essential oils from temperate climate plants against the germination of selected weeds and crops

Author:
A. Synowiec; D. Kalemba; E. Drozdek; J. Bocianowski
Source:
Journal of pest science 2017 v.90 no.1 pp. 407-419
ISSN:
1612-4758
Subject:
Achillea millefolium; Acorus calamus; Amaranthus retroflexus; Avena fatua; Avena sativa; Brassica napus; Bromus secalinus; Carum carvi; Centaurea cyanus; Foeniculum vulgare; Lavandula angustifolia; Matricaria chamomilla; Melissa officinalis; Mentha; Salvia officinalis; Solidago canadensis; Tanacetum vulgare; Thymus vulgaris; Zea mays; crops; dose response; essential oils; germination; monoterpenoids; multivariate analysis; phytotoxicity; principal component analysis; seeds; sesquiterpenoids; temperate zones; weeds
Abstract:
... This work aimed to assess the phytotoxic potential of 12 essential oils (EOs) collected from plants growing in natural or cultivated stands in a temperate climate, i.e., Achillea millefolium, Acorus calamus, Carum carvi, Chamomilla recutita, Foeniculum vulgare, Lavandula angustifolia, Melissa officinalis, Mentha × piperita, Salvia officinalis, Solidago canadensis, Tanacetum vulgare and Thymus vulg ...
DOI:
10.1007/s10340-016-0759-2

47. Synergic use of chemical and ecotoxicological tools for evaluating multi-contaminated soils amended with iron oxides-rich materials

Author:
Rebeca Manzano; Pedro Jiménez-Peñalver; Elvira Esteban
Source:
Ecotoxicology and environmental safety 2017 pp. -
ISSN:
0147-6513
Subject:
Anabaena; Brassica napus; arsenic; beta-glucosidase; bioassays; cement; copper; dose response; ecotoxicology; enzyme activity; iron; iron oxides; luminescence; median effective concentration; mining; pH; plant growth; planting; polluted soils; pollution; pulp and paper sludge; rolling; seedlings; seeds; sulfates; toxicity; zinc
Abstract:
... Abandoned waste piles from ancient mining activities are potential hot spots for the pollution of the surrounding areas. A pot experiment was carried out to check the potential toxicity of the dumping material present in one of these scenarios, and several amendments were tested to attenuate the spread of the contamination events. The waste material had an acid pH and a large total concentration o ...
DOI:
10.1016/j.ecoenv.2017.03.031

48. Characterization of thiol‐based redox modifications of Brassica napusSNF1‐related protein kinase 2.6‐2C

Author:
Tianyi Ma; Mi‐Jeong Yoo; Tong Zhang; Lihong Liu; Jin Koh; Wen‐Yuan Song; Alice C. Harmon; Wei Sha; Sixue Chen
Source:
FEBS Open Bio 2018 v.8 no.4 pp. 628-645
ISSN:
2211-5463
Subject:
Arabidopsis thaliana; Brassica napus; abscisic acid; cysteine; dose response; genome; glutathione; mass spectrometry; oxidation; protein kinases; protein phosphorylation; reducing agents; stomatal movement; sucrose; sulfonic acids; thiols; transcription (genetics); tyrosine
Abstract:
... Sucrose nonfermenting 1‐related protein kinase 2.6 (SnRK2.6), also known as Open Stomata 1 (OST1) in Arabidopsis thaliana, plays a pivotal role in abscisic acid (ABA)‐mediated stomatal closure. Four SnRK2.6 paralogs were identified in the Brassica napus genome in our previous work. Here we studied one of the paralogs, BnSnRK2.6‐2C, which was transcriptionally induced by ABA in guard cells. Recombi ...
DOI:
10.1002/2211-5463.12401

49. Exogenous nitric oxide pretreatment protects Brassica napus L. seedlings from paraquat toxicity through the modulation of antioxidant defense and glyoxalase systems

Author:
Mirza Hasanuzzaman; Kamrun Nahar; Md. Mahabub Alam; M.H.M. Borhannuddin Bhuyan; Hirosuke Oku; Masayuki Fujita
Source:
Plant physiology and biochemistry 2018 v.126 pp. 173-186
ISSN:
0981-9428
Subject:
ascorbate peroxidase; seedlings; lipid peroxidation; Brassica napus; oxidative stress; dose response; malondialdehyde; glutathione transferase; hydrogen peroxide; proline; nitroprusside; chlorosis; biochemical mechanisms; superoxide anion; leaves; linoleate 13S-lipoxygenase; glutathione dehydrogenase (ascorbate); water content; toxicity; antioxidant activity; enzyme activity; monodehydroascorbate reductase (NADH); glutathione-disulfide reductase; catalase; nitric oxide; glutathione peroxidase; paraquat; chlorophyll
Abstract:
... To investigate the physiological and biochemical mechanisms of nitric oxide (NO)-induced paraquat (PQ) tolerance in plants, we pretreated a set of 10-day-old Brassica napus seedlings with 500 μM sodium nitroprusside (SNP – a NO donor) for 24 h. Then, three doses of PQ (62.5, 125 and 250 μM) were applied separately, as well as to SNP-pretreated seedlings, and the seedlings were allowed to grow for ...
DOI:
10.1016/j.plaphy.2018.02.021

50. Phenotyping of Brassica napus L. plantlets affected during in vitro growth by the presence of epoxiconazole

Author:
B. Durenne; A. Blondel; N. Ducat; O. Pigeon; M. L. Fauconnier; P. Druart
Source:
Acta horticulturae 2018 v. no.1202 pp. 101-106
ISSN:
0567-7572
Subject:
Brassica napus; absorption; automation; biosynthesis; cultivars; culture media; dose response; explants; foliar application; gibberellins; in vitro studies; metabolites; necrosis; phenotype; plantlets; rapeseed; roots; shoots; soil; tandem mass spectrometry; triazole fungicides; winter
Abstract:
... Epoxiconazole like others triazole fungicides are known to be persistent in the soil. Several studies using foliar application experiments demonstrated the effect of its triazole metabolite as plant growth regulator through the anti-gibberellin activity. And notably, the reduction of Brassica napus L. growth can be attributed to the inhibition of gibberellin biosynthesis at the stage of conversion ...
DOI:
10.17660/ActaHortic.2018.1202.15